Helena and her natural approach to acting

In an interview from 2007 with Helena, she mentioned how playing Bellatrix Lestrang in Harry Potter came quite naturally to her as she just had to 'go back to being a kid'. I think this can make it a lot easier for Helena when performing because she can relate quite a lot to her modern characters as she is a tad irrational herself and therefore makes the performance in her films a lot more realistic and believable. 

http://www.ew.com/ew/article/0,,20044270_20044274_20046035,00.html